National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Current conditions at

Helena Regional Airport (KHLN)

Lat: 46.60445°NLon: 111.9892°WElev: 3874.0ft.

Mostly Cloudy

61°F

16°C

Humidity 51%
Wind Speed W 17 MPH
Barometer 30.12 in (1019.98 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 08 Aug 11:35 PM MDT
Extended Forecast for

East Helena MT

  • Tonight

    Tonight: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 50. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.

    Low: 50 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 76. Southwest wind 6 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 76 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 51. North wind 5 to 11 mph becoming south southwest after midnight. Winds could gust as high as 20 mph.

    Low: 51 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 82. Light and variable wind becoming west northwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

    High: 82 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52. West northwest wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 52 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 87. Calm wind becoming west northwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56. Northwest wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. Light and variable wind becoming northwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 50. Southwest wind 7 to 11 mph, with gusts as high as 22 mph.
Saturday
Partly sunny, with a high near 76. Southwest wind 6 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 51. North wind 5 to 11 mph becoming south southwest after midnight. Winds could gust as high as 20 mph.
Sunday
Mostly sunny, with a high near 82. Light and variable wind becoming west northwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Sunday Night
Mostly clear, with a low around 52. West northwest wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 87. Calm wind becoming west northwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Mostly clear, with a low around 56. Northwest wind 5 to 10 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 86. Light and variable wind becoming northwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Mostly sunny, with a high near 85.
Thursday Night
Partly cloudy, with a low around 52.
Friday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Helena MT
 46.59°N 111.92°W (Elev. 3891 ft)
Last Update:
10:29 pm MDT Aug 8, 2025
Forecast Valid:
11pm MDT Aug 8, 2025-6pm MDT Aug 15, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation